/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/PBDRigidClustering.h
GetChildToParentMap This map stores the relative transform from a child to its cluster parent.
const [TArrayCollectionArray](API\Runtime\Engine\Physics\Experimental\TArrayCollectionArray)< [FRigidTransform3](API\Runtime\ChaosCore\Chaos\FRigidTransform3) > & GetChildToParentMap() const